Shovel

Abstract

A shovel includes a lower traveling body, an upper turning body turnably attached to the lower traveling body, an automatic greasing device mounted on the upper turning body, and a control device configured to control the automatic greasing device. The control device is configured to control timing to start greasing by the automatic greasing device based on the past operating condition of the shovel.

What is claimed is: 
     
       1. A shovel comprising:
 a lower traveling body; 
 an upper turning body turnably attached to the lower traveling body; 
 an automatic greasing device mounted on the upper turning body; and 
 a hardware processor configured to control the automatic greasing device, 
 wherein the hardware processor is configured to change a set time with respect to greasing by the automatic greasing device based on a past operating condition of the shovel, the past operating condition of the shovel including at least one selected from the group consisting of a number of non-operating days, a cumulative idling time, an excavation time, a cumulative time for which a predetermined drive source mode is selected, and an actuator load, and 
 wherein the set time is a target time for continuing a non-greasing state or a target time for continuing a greasing state. 
 
     
     
       2. The shovel as claimed in  claim 1 , wherein the hardware processor is configured to control timing to end the greasing by the automatic greasing device based on the past operating condition of the shovel. 
     
     
       3. The shovel as claimed in  claim 1 , wherein
 the hardware processor is configured to start next greasing when an elapsed time since ending the greasing reaches a predetermined time, and 
 the elapsed time includes an elapsed time during which a drive source of the shovel is stopped. 
 
     
     
       4. The shovel as claimed in  claim 1 , wherein the hardware processor is configured to change a greasing interval according to the past operating condition of the shovel. 
     
     
       5. The shovel as claimed in  claim 1 , wherein the hardware processor is configured to start the greasing when a non-greasing time reaches a first set time and end the greasing when a greasing time reaches a second set time, and to start the greasing at a time of starting a drive source even before the non-greasing time reaches the first set time if the number of non-operating days exceeds a threshold. 
     
     
       6. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to extend the second set time for one or more times of greasing immediately after starting the greasing at the time of starting the drive source. 
     
     
       7. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to shorten the first set time for one or more times of greasing immediately after starting the greasing at the time of starting the drive source. 
     
     
       8. The shovel as claimed in  claim 5 , wherein the non-greasing time is not measured while the drive source continues to be stopped. 
     
     
       9. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to start the greasing by the automatic greasing device when a sum of a duration of the non-greasing state immediately before the drive source is stopped and a duration of the non-greasing state immediately after the drive source is restarted reaches the first set time, if the number of non-operating days is less than a threshold. 
     
     
       10. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to extend the first set time when the cumulative idling time during a past predetermined period exceeds a threshold. 
     
     
       11. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to shorten the second set time when the cumulative idling time during a past predetermined period exceeds a threshold. 
     
     
       12. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to shorten the first set time when the cumulative time for which the predetermined drive source mode is selected or the excavation time during a past predetermined period exceeds a threshold. 
     
     
       13. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to extend the second set time when the cumulative time for which the predetermined drive source mode is selected or the excavation time during a past predetermined period exceeds a threshold. 
     
     
       14. The shovel as claimed in  claim 5 , wherein the hardware processor is configured to perform at least one of shortening of the first set time and extension of the second set time when a load during a past predetermined period exceeds a threshold. 
     
     
       15. The shovel as claimed in  claim 1 , wherein the non-greasing state is a state in which the greasing is not performed by the automatic greasing device and the greasing state is a state in which the greasing is performed by the automatic greasing device.